murphyYeast Extract
AKA: Yeast Ferment Extract, Saccharomyces Cerevisiae Extract
Plant-Derived
Skin Conditioner
Barrier Support
Extract
Clean
OriginDerived from Saccharomyces cerevisiae and other yeast species through fermentation processes. Obtained by culturing yeast cells, then lysing and concentrating the cellular contents into extract form.
Faex (EU),Yeast Extract (1),Yeast Extract (2),Yeast Extract (3),Yeast Extract (4),Yeast Extract (5)
CAS #
8013-01-2, 68876-77-7
Form
Liquid
Skin Types
●all-skin-types
Best For
Dullness
Pregnancy & Breastfeeding Safe
Yes
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Skin Protecting
Helps rebuild and strengthen your skin barrier — the invisible shield that keeps moisture in and irritants out. Essential after over-exfoliating or harsh weather.
Nourishes & Protects
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory0 listings
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Skin Irritant
1 study / 1 not irritating (CIR 842)
Not a Sensitizer
7 studies / 7 not sensitizing (CIR 842)
Mixed Eye Irritation Results
1 study / 1 mixed / reactions minimal (CIR 842)
Dermal Absorption 1.1–4.6%
2 lab (in vitro) studies in the CIR safety assessment (CIR 842)
Concentration Guide
Leave-on0.0000036–0.16%
Rinse-off0.0001–0.01%
0%50%100%
CIR reported use · report published 2024
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR